package com.wyq.domain;

import com.alibaba.fastjson.annotation.JSONField;
import com.wyq.domain.User;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Collection;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

/**
 * @Author 三更  B站： https://space.bilibili.com/663528522
 */
@Data
@NoArgsConstructor
public class LoginUser implements UserDetails {
    /**
     * 用户信息
     */
    private User user;

    /**
     * 权限信息
     */
    private List<String> permissions;

    public LoginUser(User user, List<String> permissions) {
        this.user = user;
        this.permissions = permissions;
    }

    /**
     * 存储SpringSecurity所需要的权限信息的集合
     * @JSONField 取消序列化，防止redis执行时报错
     */
    @JSONField(serialize = false)
    private List<GrantedAuthority> authorities;

    /**
     * 获取权限信息
     * @return
     */
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        if (!Objects.isNull(authorities)){ //不为空直接返回
            return authorities;
        }
        //通过Stream流方式存储
        authorities = permissions.stream().
                map(SimpleGrantedAuthority::new).  //GrantedAuthority是接口，SimpleGrantedAuthority是一种实现类
                collect(Collectors.toList());
        return authorities;
    }

    @Override
    public String getPassword() {
        return user.getPassword();
    }

    @Override
    public String getUsername() {
        return user.getUserName();
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }
}


